<span>21P +35Q
=7(3P + 5Q)
hope that helps</span>
You can either use the usual formula for the equation of a line when given two points 

Or we can make some more precise reasoning, specific to this case: the y intercept is 3. When a line is written as
, the coefficient q is the y intercept. So, the second and third options are surely wrong.
Moreover, the slope m is the ratio between the difference bewteen the y coordinates and the x coordinates of two points on the line.
In our case, the two points differ by -1 units vertically, and 3 units horizontally. This implies that the slope is -1/3.
So, we have

Fat bussy..... bussy lip fell off at the age of 50...... I think the answer is 72
The smaller triangle is scaled by a factor of (18 cm)/(54 cm) = 1/3 of the larger triangle. The ratio of areas is the square of that scale factor.
small triangle area = (1/3)^2 × large triangle area
... = (1/9) × 603 cm^2
... = 67 cm^2
The appropriate choice is
... C. 67 cm^2